Fix error message

Issue #4528

Author: forlulz

spring-batch-core/src/main/java/org/springframework/batch/core/launch/support/JobOperatorFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022-2023 the original author or authors.
+ * Copyright 2022-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -71,7 +71,7 @@ public class JobOperatorFactoryBean implements FactoryBean<JobOperator>, Initial
 	public void afterPropertiesSet() throws Exception {
 		Assert.notNull(this.transactionManager, "TransactionManager must not be null");
 		Assert.notNull(this.jobLauncher, "JobLauncher must not be null");
-		Assert.notNull(this.jobRegistry, "JobLocator must not be null");
+		Assert.notNull(this.jobRegistry, "JobRegistry must not be null");
 		Assert.notNull(this.jobExplorer, "JobExplorer must not be null");
 		Assert.notNull(this.jobRepository, "JobRepository must not be null");
 		if (this.transactionAttributeSource == null) {